Typewriting machine



4 Sheets-Sheet 1 a by Marc-h 30 1926.

C. B. CORCORAN El' AL TYPEWRITING MACHINE Filed Dec. 50, 1922 March 301,578,399 c. B. coRcoRAN Er M.

TYPEWRITING MACHINE Filed Dec. 30, 1922 4 Sheets-Sheet 2 MMV, Nur! March30,1926; 1,578,399

' C. B. CORCORAN ET Al.

TYPEWRITING MACHINE Filed DeC. 301922 4 Sheets-Sheet 5 ,A g, @4gb/fm494m; am

v o ANIM vwmzNN 4 Sheds-Sheet 4 March 30 ,1 1926.

C. B. CORCORAN El' AI.

TYPEWRITING MACHINE Filed Dec. 30, 1922 Patented Mar. SO, 1926. I

, U-Nrriio sfrarxes l j 1,578,139e

CORNELIUS B. ooneoRAN, or NEWYORK, Ann 'ALFRED e.-.r'.,neRoW-sx1, orBacon-fl NLviv, NEW vorm,V Assieiioies ro Unnnntvoon firmware-nnCOMPANY, or NEW` YORK, N. Y., A CORPORATION OF. DELAWARE.

' `Timer:WRITING iviaeririin Application filed neeemrbereo, i922. serial509,793.

".Toallie/i071? t may concern.:

Bev it known that We, CORNELIUS B. COR

comit' and ALFRED G. F.' KUnoWsii, both citizens of the United States,said CORCOBAN' and Asaid KURoWsKI residing inyBroolrlynA -Borouglncounty of Kiiigs,ycity and State or' New York, have invented certain newand useful Improvements in Typewriting vMavchines, of which theollorvingis arspeciiication; Y v- The present invention i'elat'cs'tosounddeadening casings'for typevvriting machines. More particularly, .asto certain features thereof, the invention relates to a combinedcarrying-and sound-deadening casing; that is to say, to ycasing in`which a portable inacliine njiay be carried by hand Jfrom piace toplace, and in which the niaclii-ne niay be operated. Y ,y y

`ieitlier sound-deadening casingsnor cal'- rying cases are new' with thepresent invention; norlarewe' the iirst to invent a coinbin'edsound-dcaden-in'g and carryingeasing.

" The coinbined ',souiid-deadening. and carry labor oir the part of theLoperator in trans'-V i" iifii1ing the saine troni" a carrying caset'o acase in vvhich the machine is. operable#V Vand vice versa, and whichhave involved eiituresfadding to the costofthe, saine and detractingVfrom the 'strength and rigidityf thereof.

An 'object 'of the present invention is al casingvo'f the generalcharacter mentioned,

' "and which, as to the'general VVframe-Work thereof, inay be fixed orpermanent in its dimensions andA rigid in `cliaractei";'iieces sitatingno extension, unfolding or settingV up'lo the soiincl*prooiii rchainberJulien" the inachineis to be operated therein.

A feature' Yofthe invention is a conibined vcarryingY andysound-deadening casing, in which the side,:rear Aandbottoin,Walls ofing casings of the Vprior art, however, havre",` been casings `whichhave required the ei;- ten'sion or' setting up of parts preparatory Y tothe operationof the machine-therein ';'and which, therefore, haveinvolved tin'ie'mand" of an interior soundedeadening chamber. A Ivfeaturev of tliecasin'g is the partitioning of" extension of themachine protrudes from the -the interior thereof into tivo parts; towit, '1 an interior Vsounddeadening chamber and.; Ian outer chainberinto which the keyboard" sound-deadenin'gfchainber. A further feaA l'.ture of the casing is the constructionof the' Vsaine in twofpartsgtoWit, aibody portion,y

jeey

which contains y'fthe interior' sound-deadeiichamber, and a Coverportion Whichis adapt- Aing chainber and the exterior keyboard ed toVcover both of such chambers Whenthe jcasing is to bev used' asa'carrying case; 'the cover portion-being removable for access to .Y

the keyboard When the machine is to be op'- erated, and the interiorsound-proof-cliainber being provided With a separate cover to close therestof the machine against the emission of noise when the outer coverperf tion of the casing is removed'.

'Another feature of "theinvention is a novel shockabsorbing andsound-deadening i support and attachmentk for the rear 'eetof of thecasing which serves as a baiseboard.

Vthe'inachine to the Wall of the coverv portion Other features andadvantages Willherein-Y after appeaizc K In the accompanying drawings, vf

elevation', takeiifon the 'line 2-42 of Fi'gure'l'.

. FigurefiS.vr a'ffrontwvievv ofrtliefca'sing' and the machinev therein;the outside casingcover having been reinoved from the casingfbodyandthelatter being seated'in the removed-cover.V4

lup to position Vforaccess to the machine..

y Figure ll a top plan View of the' casing; jtlie left-hand sidebeingyfjshown 'ivitlr the cover removed, and thel position oftheinachine,being'iiidieated in dotted lines. i

" Figurey 2 is a view, in crossfsect'ional 'side proof coverbeing,hovvever, shovvn4 as swung F'gure 5 isa front view of the casingWit/hl@ the outer cover' locked lthereon for. .transf portation; kthecasing being broken .away at.'

the right-hand end to 'show certain details.

1190' Figure 6 is a View, in cross-section, loolry Within thefsaine. f

ing from the front, takeny on tlieline (5#6 of Figure 2, and showing themeans wherel v by the ,rear feet ofthe machine are supmachine.Y

ported upon, andsecured to, thewall of the casing which serves as abase-piece for the Figure 7 is a view, looking at the interior l of thecover, of the cushions which formthe lslotfor the operating leverson thecarriage,

the carriage and the attachments of the same to the cover.

Figure 9 is a rear viewl ofthe device for locking down theinte'rior-sound-proof cover.

Figure 10 is a front view of the platen and platen-carriage', with thelinespace lever and line-space mechanisin'at the leithand end thereof,and with the rack-release Yhandend thereof. ,l f Y c Figure .11 isaview,.in side elevation, u

' and -the front thereof with",-sound-deadenfing material 49, whichlatter is suitably: se-

lever;v and carriagereti'irn arm taken on the line 1l-11 or' FigurelO:`i

Figure 12 is a detail, perspective view ot the bracket which supports.the line-space lever. y c l VThe casing comprises a 4body-portionr 15yand an outside cover-portion 16. Theparts 15 and 16 have hinge-plates17 and 18, respectively, lsecured thereto; andthe plates 17 havefxedthereto hinge-pins 19 for re .ceiving the plates 18;V In thek lower'edges ofthe frontiwall off the Vcover-part 16 (see Figure 2)' are pins20, adapted, .whenfthe cover is in closed position on the body-por-Vtion 15, to be received` in pockets :or recesses Y' 21 Vin 'the` forwardedge of thefpart 15. A

lock22', of any suitable character, operable l "by a keyfadapted to beset into the Akey-hole theflock 22 is released and' thev '.coverl16lA Yswung around the.V hinges 19 suliiciently to 4 positions.

' 23inthe'fron`t wall of the cover16,fserves to securev the cover 16 tothe body-part 15. The

assembled casing withV the machine therein Vmay be carried by meansof ahandle24v/onL c the cover 16.` hen so carried byfthe hanl dle24,thepinsl20fserve to supportthe":body-V part 15, Aand machine, fromthecover. l/Vhen Vclear the pins'20 01"' the recesses21,the coverpart maybeshifted longitudinally l'e'ftward Y, to clear the hinge-plates 18`thereon Vtronlr the hinge-pins 19,;y whereupon the coverepa'rt 16 maybelifted from Vthe body-.part 15, and, if desired, placed in thepositionshown in Figure 4, wherein the body-partal', with' the machine thereon,is shown as seated in the inverted cover. VPreferably lthecoverilias`7side flanges 25;;(see F igure), which vare adapted to iit'over'the'sidewalls 26 'of ythe ibody-part in both the `Figure 2 and F igurcvided longitudinallyby a plate 27, which extends from.r one tothe otherof vthe side walls, 26 thereof. The plate 27Y is oiset at its lower edgetogform a ange 2,8, thro-ugh which are passed wood screws 29, securingthe plate to the baseBO of the body-part Thebody-portion 15 of thecasing isdi-` Y .Y

thereof where the clover eneao'es the base.

1 ,Y a b rEhe plate27, together'with the rear wall 33 of the vpart 1.5and thelps'ide walls of thelatter, Yforms an interior cl'iamber adaptedto V'receive the main traine 84v and the carriage 35 Voi the machine.vrlhe ykeyboard-efrzterfr sion 36 ot the niach1n`e protrudesV through,and `forward of, the plate 27, so that the keyboard ymay be accessiblewhen the outer'cover 16 is removed. lThis interior chamber'has the'yrearwall thereof lined with sound-deadi i ening material. 37; the side wallsthereofwith sounddeadening material 38 V the base thereofwithsound-'deadening material 39;

cured to the `plate 27. rllhe interior'chamis also provided witha cover41', hinged` i at 42 tothe casing side walls'26, and adapt? ed to beswung from its normal, Figure 2,

position, to the position shown in Figure Vin vwhich latter positionlaccess may be rhad V'to the machine','ior erasures and the like.

i The machine is centered upon, yand held to, the casing-wall()intheposition shown 1in Figures 1, 2 and 4.' For securing and centeringthe rear feetV 43 of the machine, the v latter have heads orshoulders44, offset from 'reduced portions45.' `Secured by iscrews 46,V

47 and 48'to the'fbase 30 is a'fspring-metal strip 49.*. This strip/isbent'or sprung be' k tweenthe screws 47 and 48 onV the one hand, andthescrews 46 and47 on the other hand,

Yas shown infFigure6,vto providea resilient,` orjcushionsupport for therear eet43 of.l the machine., Seouredto, but spaced up from, the 'strip49,"bymeansof screws y5() and'spacing-blocksvl, are brackets 52 one1115Vv Y for registration with each of the rear feet.' 5

`These brackets haveopenings thereinl of such width as to permitthe-heads 44fof the v rear kfeet to be passed "therethrough to theplate' 49. The spacingfof the brackets, 52

from the plate 49 is Such that, when `the heads of. the rearfeet.are'thusplacedupon-` thev plate 49, themachine mayfbe'pushed'rearward 'gto cause the heads of the. feetto pass under thebrackets,while the narrower Vparts 45 of the eet are vreceived inthemore Vconstricted rearward parts of the openings 58. The` rear walls ofthe openings. 53 by vengagement with the parts 45 lof, the rear feetdetermine Vthe rearward movement of the machine to'home position; and,.j when` the machine is inthis position, the vbrackets 52foverlie theheads ,44' of the feetzin such j lmanner, asto prevent lifting of therear portion of t-he machine. When, in this position, the front feet 54of the machine register with pockets 55 in disks 56,. secured by screws57 to the baseBO. 'These ,pockets are of a size to receive thefront'feet 54; and.

within the pockets are coil-springs 58, which serve to cushion the frontvof the machiner to the lower front edge of the interior cover 41 whenthe latteris 1n normal;` Figure 2,V

position.y Y Y n In ordertha-t the plate 59 maybe readily removed forthe insertion of thegma'chine, and thereafter lockedin placeup'on theplate 27, the following meanswareprovided. In

the upper edge of thevplate 27, one at 'each side thereof, aretwovertical slotsg62.l Fast to the plate 59, and adapted to register withthe slots 62, are pins63 which project in-.1

ward from the plate 59 throughthe liningof the latter, and through slotsin the lining 40 of the rplate 27, to a point beyond kthe interior faceof the latterlining. When the pins 63 are registered with the slots 62,the plate 59 may therefore be lowered into Figure 3 positionforvengagement with a shoulder 64on the plate-27, 'and for engagementwith the front wall 'of the machine. *In

this'position, .hooksl 65, pivoted at 66 to the plate 27, areadapted tohave their'noses 67 snapped over; the pins 68, to-lock the plate 59 downvagainst upward displacement. Asl shown in Figure V2, the hooks 65 arespaced from the plate 27, loynieansof `collars 68 on,

the pivot-pins 66. Each hook 65has a finger 69,: integral' therewith,whichl finger, as

shown in Figure'2, is offsetforward at 7 0,] and then upward in the formof a yoke71.V

' y-betweenthe 4side .walls 94 of the cover and the retaining strips 88,heretofore menj The screwsV 89 pass through thel "gather-edends of thefelt 92'.`

In the front ofthe cover is a window, I 1 through which the writingonthe platen may 2 be observed., A `window-pane 95of glass y,orother.'transparentmaterial,'.is -set into 2a 1 The yoke 71 looselyrembraces a stop-pi n72, fast to the plate 27; and the throw of thehook, rineither direction, is determined by the engagement ofv one, orthe otherlof the armsof the yoke with the pin 72. The pin' 72 alsoservesas anchorage for one end of a .spring 7 3, the'other end of whichis' secured by a pin 74 to thehook. The'tension of the springis'suchas't'o urgethe hook4 in adirection to lock, and vhold locked, theplate 59 upon the plate 27. The lining 40 on the plate 27 is suitablycutaway or recessed, to

receiveV the iinger'69 ofthe hook, and'to allow for movement ofl thelatterfwithfthe 'Y hook.

ner. Secured, by means ofvwood screws 7 4?,

The cover is pivotally connectedrfto there. casing side walls 26 in thefollowing manto the Walls 26 Vare disks or plates 75, having l vbushings7 6 integral vtherewith fand offset linto 'countersinks in 'the walls26. These bushings serve as journals for'I pivot-pins 77 The pins 77 areheld to the cover-wall 41 by U-shaped :members or yokes 78, veachof`Vfor holding thek U-pieces to the cover. The

which has a flange'79vto receive screws 80,-'V

pivot-pins 7 7. .are heldagainst longitudinal i movement in the`U-pie'ces, vand vin the bush-y ings 76, by feet-screws 81 in :theU-pieces.

beyond the yends of the U-pieces; and such projecting ends have grooves83, to receive the linger-nail, or another implement, for sliding thepins `in and out of the bushings f The pivot-pins (see Figure 5) projectat 82v y76-when the set-screws 81 are loosened; thus Y vpermittingthecover 41 to Ibe mounted 1n the casing, or ito. be removedexpeditiously,-

. v and at will. The cover, like the restiof the interior casing,- isyprovided with al lining 84 and this lining is provided with a'facing-piece 85,of-sheet-metalgor other mate-P `rial, to prevent foulingofthe paper, in the machine, on :the lining .8,4jas Vthe carriageV ismoved in letter-feed and return directions.vv As indicated in Figure 2V,the' `lining 84l is recessed to receive the `U-pieces 78 and pivot-pinsand, to permit of access to the pivot-pins, and to the set-screws, thefacingpiece 85, as shown in Figure 5, is cut away at 86. i

Ashercinbefore state-d, vthe normal 'iposivtion of thecover 41 is thatshown in Figurev 2. v-The lower `edges of the side lining-mem? bers 87ofthe cover areheld by strips 88;

and screws 89 pass through thevcover and. v

through the lining V87 and vthread vinto` the strips 88.1 Also heldbythe 'strips 88 andv .screwsv89 (seemFiguren5)` are side cushionsI 90, bymeans of which thecover, at the sides the `side lining-members 38 of thecasing- 'thereofyis supportedfon the upper e-dgesOf ,part 15. Thesecushions consist of lengths ofrrubberptubing 91, wrapped in strips92,

lof yflexible material,such as felt,y the edges of Vwhich strips are`brought together at 93 tioned.

thedrawings, vthe pane is'shown; as'comprisg ing superposed sheets ofglass95a, 95? .(see

Figure 8).- yAt the sides lof the window are metal gplatesf 96o ,securedto the v.cove-r by .iscff screws 9,7,"'whichY platesfat the edgesthere-v` of, underlie the edges of the lower pane 95h,

and-servejas shelves `on lwhich Ythe windowpanes are supported Vfrom thecover. 'At

l" .n tothe side cover-supporting cushions 90, and

Aon* a metal strip 99,'secured by screws 100'to the lower front edgeofthe cover. The strip 99andscrews 100 serve also tohold to the' cover acushion 101, similar in all'respects whichrestsuponan odset 102 Von theupper Vedge of there-movable -ic'ront plate 50, when th'ecover is'innormal position.v At the rear `ofthe window, a .metalsti'ip 103 servesas a Asupporting shelt for the'i'earicdge o1' the pane a, andthis strip103 isheld tothe cover-plate 41 by screws 104;

The cover isnorinally locked down in Fig! ure 2 position. VJhen,however, the cover is unlocked, it is'adapt-ed nto be automaticallythrown open, that is, to Figure 4position, by

. a springldevice. This device comprises two telescopingV cylinders 105,106. The cylinder 255:105- .t'erminates at lits-lower end in a head 107,carrying a yoke 108, in which is received a bracket-'plate 109,fsecuredby'wo'od screws to the' base 30. A pivot-pin 111 connects "the yoke '108to the bracket-platelOQ, so that Zthe cylinder 105niay swing backwardand forward. The cylinder 106jis similarly constructed and pivotallyconnected at 112`to a bracket-plate"113, secured'by screws `V114v to thecover-plate'4l. l/Vithin the .telescopr ing cylinders is a coilsspring115, which Y bears at its upper end against a head 110 of the outercylinder 106, and which, at its Vlower end, lbears against a collar 117,which visadjustable withinthe inner cylinder 105. 4o

For effecting adjustment of the position of the-collar 117to-fvary theytension of the` Y springll, a screw 118 is threaded through the collar117 ,f and bears upon a fixed head `119 in theinner cylinder. Y Byturning the screw 118, the position of the collar 117,:l

with respect tothe head 119,1nay be changed Vat will. The 'tensionVoiithe spring T115 is such as-to thro-w theicover' open yassoon as thesame is unlocked.

- The'cover isheldagainstopening bylo'ck (see Figures?)` and 9) atthefront wall of the interiorfcasing. This lockconsists of ahook120,pivoted at 121 vto-jtlie'plate 27',V

and held suitably spacedltherefrom Vby a collar 122`on the Apivot-pin121. The nose 122*1 of the hook is adaptedv to be engaged Y inv astirrup 123,'depending from the cover- 4plate 41, at the left-hand sideof theV window,

and' having va "iangel 124 at its upper lend to receive la screw 125,lby means'ofwhich the f stirrup is held Lto the cover."` Thenose 122"Lof the hookiscarried by'a piece Y126, ad

1 Y justable up andfdown, with respect to fthe hook-proper 120, foraccurate determination vof the correctk lockedpositionoi:l the kcoverupon Ythe spring-device, eretotoie Vmenxandl cas ing-propen` Tofpermitof suchad- `justinent, headedv screws 127` on rthefhook-iV propervpass Vthrough'v slots 1287in the adi f justable part` 126.1{The lockedposition ofr the-hook is determined byV aV stop-pin 129'"V on vthe plateV27." This pinfalso serves as anchorge for one endot a spring 130 (seekFigure 3) .the other end of which springis connected to a pin 131 onarlinger `182 'of the hook-proper; The spring 130 acts auto-VVniatically to throw kthe hook to coverflook-` r'ing position, and tohold the same insuch position. For moving -thehook .to unlockf.'

the cover, there is pivotally connected there#V to, at 133, a link 134,the other end'oi't' which link is pivota'lly connected at 135` to an arm13G, fasten a` rock-shaft 137, 'journaledf in the iront plateY 27. ATheshafty'f137 `passes through theront plate,4and, on the outside of thefront plate, has fast thereto an arm 138, carryinga'finger-piece 139.kV.Depression or' ythe 'linger-.piece 139 causes the arin'138 to berocked -in suchmanner as to drawon the link134 and release'the hookwhere! bei', the length of .the several parts: of the f casing must beVsuc-h as,y to allow for full movement of the carriage in letter-'feedland return directions on the machine. Secured tothe carriage, however,arevarious operat- Vingleversand arms which should vbe accessible fromthe out-side of the sound-proof chamber. 'lh'ese levers and-armscomprise av line-space'lever 140,11 a carriage-rack-rei lease-leverr 141and` carriage-return-army 142. If they are to projectto Ythe outside of"the sound-proof chamber, the'l-atterY must be slotted to permit themtotravel therealong .with the carriage. Such axslot isshoyvn-atjl 143iii thecover at the rear of the window'- pane. li'ftliis. slot-.is open,however, un-v desirable -noisejwilly lbe emitted therethrough;Consequently, resilient cushions are'provid- Ved. which come together toclose f the slot,

exeeptfatthe :points where lthe levers and Varms protrude therethrough.YThese cush'#L 1 ions (see Figures2 yand 8) area 'forward cushion144 anda rearward cushion 145. 'QT he Y cushions, are identical inconstruction, 'co'nl2@ v sistinglof an inner attened tubeg146', offlexible i'naterial, embraced and"supportedv`l` bya strip 147;, offlexible material, such as n felt, the ends oit which are broughttogetherv and'securedY to theCOVer-plat'e. As tothe l`toi-wardcushion,the yfelt edges are'. brought between they rear `window-pand-supporting.f

strip 103 and cover-plate 41. `The screws 104,'whichfholdlthe strip103,7pass throughV and ,hold t-he edges :of the 'felt 1747,.V The'VVedges of the elt147of thev rear cushion are y similarly broughttogether between' the coven-plate 41 and a inetalA strip 148, which isheld to thecovereplate by screws 149, which pass through the lat-herededges of the feltV and thread into the strip 148. vllach cushion alsocomprises a 'coil-spring 156, which 'ezi-4 tends longitudinally theVfull length thereof,

' and the ends of which are set on 1)ins 151 in L t u a ie ` suchvposition as 'to yieldingly hold' the.

latter ytogether to close theslot between the saine. In addition totheir end supports o-n` the vplates 152, the coils are held to thecushion part-s 146 at intervals throughout their length by spring clipsv155 r(see Figure 6).

-These clips are curved-t0 einbracethe coils,

and' have flattened tongues 156e,y adapted to be insertedbetweentheretaining strips 10?. and l14S, as the'case may be, and the gatheredends of the cushion-holding felt between such strips and the cover-,wall41. lny forcing theA clips into position, the feltiscompressed, andbeing thereafter under compression, exerts a frictional holdV on the'clips which prevents their accidental dis.- placeinent. The clips inay,therefore,"be positioned` and removed without vmanipulation of anyspecial attaching' means there-i for; and, being held, as above stated,Vmay be positioned wherever desired along Vthe, cushions, `and in anydesired number. .Prefer-L ably the clips for holding the coil of therear cushion are staggered with respect to the` clips for holding thecoil of the front cushion. This is so, in order that' two opposed andiinmediately-registering clips, one bearing on each cushion, nialy nototi'er too great a resist-ance to'inoveinent of the 'levers with thecarriage. alongthe cushions. As has been stated, the clips themselvesare iiexib-le, and, if niade suliiciently flexible, might even bedirectly opposed to each other, on the two cushions.

Except for the lever 140 andl a bracket 156, onfwhichthe same ismounted, the linespace mechanism shown 1n the drawings is that foundin-x the Underwood standard portable typewriter. It consists ofa'ra'tchet-V wheel 157, fast on the shaft 158. of the platen 159. A pawl160, for actuating the ratchetwheel, is mounted on a slide 161,connected to one arin 162 of a bell-cranklever, pivoted at 163 on thecarriageframe- The other arm 164 of the bell-crank-levery projectsforward and terminates in a fingerpiece 165 lwithin the interiorsound-proof chamber. This ,finger-piece is adapted to be engaged andoperated. vby the level 140,

whichfprojects through the s101314?) vtothe outside vof the cover. Thelever 1401s piv-l oted at' 166 toan ear 167, forming part. of

bent over, in the-form of a'hook, to engage `the upper edge of the sidepiece 169 of the carriage-frame atjthe,l forward part ofthe same,and tosupport 'the bracket 156 upon the 'carriage-frame at this point.r Thebracket 156 also has aside pieceorplate 170, which extends (see Figure11)v from the Vfront of the platen, alongside theside plate- 169 of theearriage,junder the platen-axle, to ther-ear ,of the latter.v Near itheforward part of the bracket-extension 170, substanf tially directlybelow lthe'hook 168, a-hea'ded screw 171fis .threaded into Athebracket-ein tensionY 170, near the under edge] of the carriage sidepiece 169, in such position'that, when the screw is tightened,the headthereof will `overlap and bear against the vcarriage side piece169,'thereby'assisting the hook 168y in holdingthe braeketfto lthecarriage. Similarly, at the rear ofrthevbracketextensionv V170, anotherheaded screw172 is threaded into the same, alongside the 'lower rearedge of the carriage side piece, and inl such position that, 'when thescrew 172 is tightened, the head thereof will overlie, and Vbearagainst, the side plat-e of thecarriage,

thereby furnishing an additional anchor for the bracket 156 vat .therear of the platen.

The screw 171 isturned into the `bracket from-the right-hand sidethereof, whereas the screw Y172 is turned intol the bracket. from theleft-hand sidethereof; the bracket being thus engaged fromboth sides ofthe carriage sidev plate. To perinit the-.head of the screw` 172 toengage the-carriage side pla-te at the left-hand side'` thereof, thebracket-extension'170 (see Figure 12)' is oil'- set leftward, at173,'tobring it, at 174, to the vplane of the-outer or `left-handportion of the carriage side plate. rlhe portion 174 of thebracket-extension 170 may havev a lthe bracket 156. The bracket 156 hasformed thereon, at the right-hand end thereof (see v vFigures 10`y and12),?anearor prong-168,

further leftward lip or offset 175, the endv of which is flushl with theouter surface of the bracket sideplate, so that the `head of the screw172, by engagementtherewith, and

inay rautomatically and correctly position the bracket-extension ,170with respect to the lcarriage side plate. It will be noted' v with theouter face ofthebracket side plate, 'A

from the foregoing that, although ther bracket 156 is securely anchoredat three points, and in different `plan-es to the carriagev sideplate,.there are no special attachinents on the latter for the bracket,nor are thereany screw-holes required in the car-` riage side platebracket. f l v That reach of thebracket, Lto which the lever 140 ispivoted, extendsleng'thwise of 'for attachment` of the.

the platenaxle, at righty angles to lt-lielrearward bracket-extension170, and thence downward with a rearwardoli'set to the pivot-point 166of the'leveri140fyThe bracket 156 has vanother prong orrrextensionl 176,at the front thereof, lengthwise; of the along the ycurved edge of therecessV 1777-, and

#to engage shoulders 179 and 180, .respectively, at the right and'lefthand ends of -the recess177,=to determine the throw of .the lever 140 ineitherrdirection. To 'steady vthelever 140 on its pivot- ,166, againstfor- 1 fwa'rd .and rearward angular movement, thev -'fpin 178 isprovided witha head-181, to engas s Vextensionlr. c Y f v Y v f -jThecarriage-return arm 142 is a fixed arm' de' withy the rearA tace ofthe bracket-` yat the AVfront,l and atth'e right-.handend of the platen,which forms a continuation eta bracket :183, which is extended under theY l l a: lined length'suihcient for lmovement platen-axle, to the rearthereof, and made fast tofan'ear 184 onthe right-hand carriage sideplate 185. The carriage-rack-release-Y v`lever 141 is a-bell-cranlr-lever pivoted at 186 Y 'toi the Vcarriage-'return arm.V'One arm 187 of this'fbell-oranklever (see Figure projects rightward,andterminates in a lrearwardly-oiifset lip 188, which underlies,l and isy z adapted to engage,`a lip. orfd-etent 189, oilvsetlefttward (seeFigures 2 and 10) from fil r1 the rack-release-lever 190, commonly foundin the Underwood standard portabletype-` writer. The lever 190 is vaylever pivotedl on ithe platen-axle, and having a rearward eX- tension191,!carrying a finger-piece 192, by

ldepression of which the oarriag/eeraclr has.V

' heretoit'ore beenv released. The lever 190 has a yoke 193, in which isttedthe end 194 oi an armV '195,' forming part of a-bell-cranlrleverpivoted at 196'to the right-hand carriage side pl'ateQ Theother arm 197of this bell-cranklever supports the right-hand end of the carriage-rack198. The left-hand end of the carriage-rack 198 is supported by an arm(not shown), but similar to the arm 197 pivoted at the right-hand sideof the care riage. .In the normal position of the :parts shown in Figure2, the krack 198 meshes `with afdrive-pinion 199. The escapementmechanism and spring-drum, by means of which the rack 198 isdriven fromlthe pinion 199,

are not shown, but maybe such as are found in the Underwood machine.When the bellf crank-lever 1954-197 is rocked counterclockwise, by thelever 190, the rack islifted outk of engagement with the pinion 199,..to per- 1 mit the freemovement of the carriage. As

j ust described, leftwardthrow ofthe rack-v releaseflever 141 moves thelever 190 in such .manneras to release the rack.

The.carriagejreturnfarin 142 has a rightward projecting prongoreirtension200, the upper surfacev 201V of which is shaped onn an1arcstru'ck fromthe pivot186 as a center;

Yand theglever 141 carries a pin-.202 adapted to kride on the edge 201,and,-lby abutment if. with shoulders l203 and 204, respectively, at

theleftandfright hand endsofthexcurve 201, to determine thethrow of thelever l141 in either direction. rlhrow ofthe lever14l f 'to the left,irst releases .,therack;` and con# tinued leftward 'pressure on: thelevery 141, Y

after the pin 202 has struck theshoulder 203,

will res'ult'in leftward movement of the Vcar-` ria-ge. To vsteadythelever`f141l against orward and rearwardv movement on its pivot 18S, the/pin 202 is provided witha head'205 `tor engagement with the rear-faceofl the` prong 200 on Y,the vcarriage-returnv arm.

Variations may be ,resortedzto within the scope of the invention, andportions of the yiniprovements may be .used without others.

Havii'ig thus described our-invention,v vwe j machine the casinghavingbodyv and cover portions, andthe body-portion havingv a V.longitudinalpartition therein which forms thefront wallk of an interiorsound-deadening chamber for themain frameandfcar riage of the ymachine;suoli partition having` any opening therein through whichfthe :kevboardVextension of the. machinev may protrude foraccessibilityto the.operator when p the cover-portion"ofthe casing has ybeen 'l moved. n s

2. A casing, fora typewriting` machine,

of: Va lined length sufficient for movement Vth ercin of the .carriageonthe maur-frame oft' the machine in the operation of the latter,

and of a width sui'iicient-to receivethe kevboard extensiones 'wellfras. tlielrest of the machine; the casing having body andcovcr portions,and the body-portionhaving a' Alongitudinal partition therein'whichi'orins the front wall of an interior soundfdcadening chamber forthe mainframe.and cai'- v riage of the machine; such partition having anopening therein through which theffkeyboard extension ot' the machinemay pro trade 'for accessibility/to Vthe operator when c thecover-portion oi: the casing hasbeen moved; the cover-portion'comprising thetop and front walls of the casing.H

p 3. A; casing, for a typewriting machine,or" a fixed length I machinein the operationlot the latter, and of a width' suthcient to receive thekeyboard extension'aswell as therestof the machine; the casing havingbody and cover l v sutiicient for vinoven'ient tlnere- Viu of thecarriage on the main frame of the portions',vv

and the body-portion having al longitudinal partition therein whichforms the 'rontwall of an inteiior sound-deadening"chamber for themainframe and carriage oi'. the machine; such-partition having anvopening therein through Which the keyboard extension of the machinemayprotrude for accessibility tov the operator when the vcover- -portion ofthe casing has been moved; the

cover-portion being Aremovable from the body-portion.

4. A casing, for a typevvriting machine, otl a fixed length sufficientfor movement therein of thel carriage on the main frame of the `machinein the operation of' the latter, and

of a Width suiicient to receiveV the lkeyboard extension as Well as therest ofthe machine;

. thecasing having bodyV and cover portions,

entirely from the body-portion.v

5. A casingg--for a typewriting machine,

of a fixed length sufficient for movement therein of the carriage onkthe main frame of the machine'in the' operation of the latter, and of aWidth suflicient to receive the'key-` board extension as Well as therestof the machine; the casing having bodyand cover portions, and thebody-portionv having a Vlongitudinal partition therein Which forms thefront Wall of an interior sound-deadening chamber for the main fra-ineand carriage of themachine; suoli partition having an opening thereinthrough which the keyboard extension of the machine -may protrude foraccessibility to the operator ywhen the cover-portionl or' the casinghas-been moved; and hinge pins eo lconnecting'the cover-portion to thebody-portion that movement of the cover-portion longitudinally or' thecasing-body releases the coverportion -from the body-portion. Y

6. A casing, for a typevvriting machine, of a ixed length suticient formovement therein of the carriage on the main frame of the machine in theoperation of the latter, and of a Widthsufficient to receivethe'keyboar'd extension as Well as the rest of the machine;

the casing having body and cover portions,

and the body-portion having a longitudinal partition thereinA whichforms the'front` Wall of air-interior sound-deadening chamber for themain frame and carriage of the machine l;

`such partition having an opening therein through which the keyboardextenSiOll ojf the machine` may vprotrude for accessibility to theoperator whenvthe' cover-portion oi vth'e'casing has been moved; `andvpins on onev oi the casing-portions adaptedto be received *inf recessesin `theother casing-portion ifoi'-70 :supportingy the' casing-body, andenclosedr y machine,f'froin the cover-portion.

7.- A casing, for atypeivritiiig machine, ot a fixed length sufficient`for movement 'therein of the cairiage onthe main frameot the" Vmachinein the operation of the lattei",r` and of a IWidth siitiic'ient toreceive the. keyboard extension aSv Well as the rest of the machine; thecasing having body and cover portions,

and the body-portion having a longitudinal partition Atherein whichforms the front Wall ot an interior sound-deadening chamber for the mainiframe and carriage 'of the in a-v chiiie; such partition havingair-,opening therein' through which the keyboard exten-`V sion of themachine-may.protrude-for accessibility to' the operatorwvhen thecover-portion or theL casing has been moved;-the cover-portion beingremovable from the body-portion, and having side ianges adapt-v` ed`totit4 over the sfide Walls of thecasingbody when the cover is closed onAthe b`ody,: and when the body is set upon the removed and invertedcover. V-

` Y 8. `A casing, 'for a typeWriting machine, of

a fixed length suiiicient formovement therein of the carriage onthe mainframe ofthe machine in the operation of the'latter, and

i of a Width suilicient to receive the keyboard extension as Well asthe-rest'o the'machine;

the casingvhaving body and coverv portions,. and the body-portion havinga longitudinal partition therein which -ormsthe front Wall of aninterior sounddeadening chamberk for thel main frame and carriage ofthe. machine; such partit-ion having an opening therein through whichthe keyboard extension oithefma'chine may protrude for accessibility tothe operator when the cover-portion of the casing has been. moved; andthe side 'walls of'the casing-body. comprising sound-deadening materialand serving as the side Walls of the iiitei'ior chamber.y

v 9.,A casing, for typeiviiting machine,`

.of a: 'iixed length VSufficient for movement therein of the carriage onthe main trame oi? the machine in the operation of the latter,

viccy 'iio and of avvidth suilici'ent to receivethekeyboard extension asWell as therest of the machine; thecasing having ibodyfand coverportudinal partition therein VWhichforms the front Wall oran interi-orsound-deadening chamber for the main :trame andv carriage ot themachine; such partitionhaving an open-j` ing therein-through which .thekeyboard ex- :tension 'of the-machine may protrude for aC- -cessibihtyto the operator when Vthe lcover- 'portion vot the casing has beenmoved;and

the rear Wall of the casing-body comprising i2@ tions, andthe-body-portion having alongitov i :2ol

Y -serving as the side and rear Walls of the interior chamber.

sound-deadening material and serving as the rear Wall of the interiorchamber.

T10; A casing, for a typewriting machine, ot a 'fixed length euicientvVforr movement therein yet the carriage on themain .frame of i'themachine in the operationof the latter,

and of a yWidth sufficient to receive the keyboard extension as well asthe restr of the vkinachine; the casing havingbody and cover portions,and the body-portion havinga longitudinal partition therein ivhich formsthe front Wall oi. an interior'sound-deadeningchamber-for the main frameand carriage of the machine; such `partitionhaving an opening thereinthrough Which the keyboard extension of themachine may protrude foraccessibility to the operator when the coverortioii of the 'casin hasbeen moved' and the side Vandvrear Walls of the casing-body comprisingsound-deadening material and All. A casing, yfor atypewriting,machine,of a hxed. length .sutiicient for movement .therein of the carriageon-the main frame or' the vmachine in the operation 'of the latter,

i and of a Width sui'iicient to receive the key- 1 vboard extension `asWell as the rest-of the machine; the casing having body and coverportions, and the body-portion having a longitudinal partition `thereinWhich forms tlic front Wall of an interior ,sound-deadening.

` chamber for themain frame and carriage of fthe machine; such partitionhaving an opening therein through Which the keyboard'ex-` tension ofthemachine mayprotrude for accessibility to the operator When thecoverportion of the .casing'has been moved; and

l another cover for the interiorV chamber for `maintaining the interiorchamber closed kwhen the outer cover-portioirof the casing is moved foraccess to the keyboard.

l2. A casing, iter a typeivriting machine,

of a fixed lengthsuiii'cient for movement therein oit' the carriage onthe mainframe of the machine in the operation of the latter, and of aWidth siitiicient to receive the keyboard extension as Well as the restof the machine; the casing having body and cover portions, and thebody-portion having a' longitudinal partition therein which forms thefront Wall of a A interior sound-deadening chamber for the iiiainfi'ameand carriage of the machine; such partition having an open-y ing thereinthrough which the keyboard extension of the machine mayA protrudeforaccessibilityl to the ope 'atoi when the .cover-' portionV oi:Vthevcasiiig` has been moved;v and another cover forthe interiorchamberfor n'ia-intainiiig the. interior chamber Vvclosed when the outercover-portion ciE the casing @is moved for accessto thekeyboai'dg-theinterior vcover being-movable for placement and removalof, and fornaccess to, the ma- 13. 'A casing,ffor Vatypewriting machine,of a fixedflength suiiicient vfor movement therein of the carriage onthe main frame of Y the machinein theoperation otthelat'ter,

and of a ividthsufcient toreceive the keyboard extension vas yvellfastneiest ofthe machine; the casingv having body and `cover therein oflthe carriage on the mainframe ot' the machine inthe operation of thelatter, and of a Width suilicient vto receive the keyboard extension asWell as the-rest of the vmachine; the casinghaving body' and coverAportions, and the' body-portion having a longitudinal partitiOnt-hereinWhich forms the lfront 4 Wall of :an interior jsound-deadening chamberfor themain frame and carriage of the machine; such lpartit-imilhaving-fan opening into which the keyboard extension of the machine maybe ylovifer'ed, and through Which the-keyboard extension of themachinemay protrude for accessibility tothe operator When the cover-portion ofthe casing has been moved, andajplate attachableto the partition' overthe `keyboard extension of' the machine, after the machine is in place,'to

.form a portion ofthe-front -Wall oi the interior chamber.

15. A casing, for atypewritiiig machine, of'ja fixed length suiiicie'ntfor movement the machiney in'` theA operation of the latter, and of aWidth sufficient to? ,receive the' key- .board extension las well as therest ofthe machine; the casing having body and cover portions, and thebody-portion having a longitudinal .partition therein which forms thevfront-Wall of an .interior sounddeadening cha-inheritor the main 'frameand carriage of the machine; Such partition havingan portions, and thebody-portion-having a longitudinal partition vrtherein 'which -forms the'front Wall of` an interior(sound-deadeningi' 'iiop 4therein of thecarriage on the main ,frame of n opening into which the keyboardextension of the machine may be loiverethfand through which the keyboardextension of the machine lmay protrude 'for laccessibility. ltothecperator when the cover-portionv ci the casing has been moved, -aplate atta'cliable'to the partition over the keyboard eXtension'of themachine, after the machine'is in place,"to

Y :form a-p'ortionof'the iront' Wall ofthe inl to be set 'into slots inthe partition, and hooks .on the partition 'adapted -to .be swung-Overthepins. I,

v16. A casing, fora typewriting,machine 0I" a iixed length siilicientfor movement therein ot' the carriage on the main `traineoi' `themachine in the operation ot' the latter, and of awidt-h suticient .toreceive the key,- Vboard extension as well as therest of the machine thecasing `having vbody and lcover portions, -and ,the {body-portion,having a longitudinal partition therein which forms thefront wall ofy aninterior sound--deaden--y ing chamber forthe main lframe and .carriageof themachine; 4siich ypartition having #an opening vintowhichthekeyboard exten-- sion of the machine may be lowered, andkthrough which the ,u keyboard extension of the machine may protrude foraccessibility to the operator when the cover-portion of the casing hasbeen moved, and a plate eX- tending trom one tov the other of the side`walls ot the casing-body land attachableto the partition over thekeyboard extension.

ot' the machine, after the machine 'is in place, to form an upwardcontinuation ot the Jfront wall of the interior chamber.v

17. A casing, `for a. typewriting machine,

of a iXed length sufticientetor movement therein of the carriage on themain frame of the machine in the operation of the latter, and of a widthsufficient to receive the keyboard extension as well asthe rest of themachine; the casing having body andcover portions, and the body-portionYhaving aj longitudinal partition therein Vwhich forms the front wall ofan inteiror sound-deaden-v ing chamber for the main''i-ame and carriageof the machine; such partition having an opening intov which thekeyboard yextension of the machine maybe lowered, and through whichthekeyboard extension of the machine may protrude `for' accessibility tothe operator when the cover-portionv of the casing, has been'moved,aplate extend;

ing from one to the other of the side wallsv of the casing-body andattachable tothe partition over the keyboard extension of the machine,after the machine is in place, to form an upward continuation of thefront wall of the interior chamber, and a movable cover for the interiorchamber, adapted to rest upon said plate, for closing the interiorchamber when the outer cover-portionof the casing is removed for accessto the key-- board. Y

18. A sound-deadening casing fora typewriting machine having a slotltherein through which may protrude and along which may travel anoperating arm on the carriage of the machine, cushions, one on each edgeof the slot, each comprising a strip of flexible material, a strap ofsheetmaterialisecured to the casing k:tor holding, hetweenvtlic sameandthe casing, the edge 'of the `flexible cushion strip, ajcoilspring Asetagainst the reaiozf each k iexible strip Vfor yieldingly vholding'fthe topposed strips to-'- 1 igetl'ier forgfclose ,the slot, a bracket-at-eachbent or sprungflea-spring secured tothe- 'casing basefpiecef` and;extending. longitudinally thereof vto serve as a support for ,the

k1.rear tee-t of the machine, the leafspri'ng being secured'to thebasefpiece between the rear `feet of thel type-writing: machine 4andtrame of the beyond yeach side, of the main typewriting machine v fingsecured tothe base-piece between the rear feet of the typewrit-ingmachine and beyondeach side of the main frame of the typewritingVmachine, and the casing 'baselpiece being recessed ,between the pointsof attachment of the ends of the leaf-spring. to

provide space forre'silient movementot the vspring' betweeiithe same andthe basepie-e under the feet of the machine.

2l. A; sound-deadening'casing for a typ'ec ,writing machine comprisingaI base-piece upon which the machine may be set,'a leafspring securedtothe casing base-piece and extending longitudinally thereof tor serveas through and rest upon the spring, and be-,

ing constricted toward the rear, so that,

upon rearward movement of the machine on the spring, the walls which ormthe consti'icted portions of the slots may interlock straps, and-*meanson thebracket-s- ,jor `hold-Y ,so i

Vafsuppoit [for the rear :feet of the ina-chine, f Y, and brackets onthe spring comprising ,y slottedplates spaced above the upper face g ofthe, spring; the slots in the bracket'plates f U0 with shoulders on theeetof the machine to hold thev machine down upon thefspring. Q2. rIhecombination with a portable typewriter, of a sound-jdeadening hoodtherefor forming with the typewriter a silent type-A v writing unit, anda cover for enclosing said c typewriter and hood arranged to form with*them a carryable unit. c

23. Incombination, a carrying case coin- 'prising ya. body and aremovablecovena port-able typewriter in the case, and a sound- 'ydeadening hood within the case enclosing the typewriter, theaifrangementbeing such j 20. A sound-dcadening casing-for a t-ypeffj ywritingmachine comprising a base-piece 'v upon which the machine may be set,and aVA 1 A, bent.y or sprung leaf-spring secured to the ele that theremoval of the cover ofthe carrying case ezqoosesreadyr for usea silenttypewriting unit.

l Y 24. In combination, a portable ty'pevv'riter,`

a; carrying oase therefor, and a lsound-dead.-

ening hood for thetypewriter 'built into the.

y carrying case, the carrying case including jabody-part and a removableoover-part,`tl1e sound-deadening .hood comprising bottoni, vrear andside wallsY which vare also common tof-the carrying case, thesound-deadeningy hood also comprising a front Wall through 'I which thetypewriter keyboard projects and a cover through which operating"partsYof the machine project, said 'front Wall and'` hood cover being'distinct from thecerryirig lcese, andcon'ipletely enclosed therein.

i* 2 5.' In combination7 aL portable typewriter',` Y

a carrying' case therefor,V and VaeouInl-'clead- 'ening hood forthe-typewriter built into :the

'carrying case, thecarrying'ca'se including Y body and cover parts, thebodyJpart consist ing of bottoni, lrear and side Walls which are partat` typing Yto add -to'fthefthickness of` the rear'andsideWallsjofthe'body thickness beneath the. bottoni of the body toprevent the transmissio-nof Anoise,-producing 'vibration-to the machineystand. Y

' CORNELIUS B; ooRooRAN.

Atrium;v Gy. r. Krreovvsm. d

'it' 'can be used as kva-Fnest forr'the bodyr 3e and'v to provide' anVadditional.'supporting

